Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 431

PIPER CHEROKEE WARRIOR SERV I C E M A N U A L
c. No lubrication is required on starting motor except at overhaul. Then lubricate entire shaft under
Bendix drive, fill grooves in armature shaft at drive end, and pack gear box with l.3 to 2.0 ounces of lithium
soap base grease Texaco #1925 Molytex O or equivalent. Thoroughly clean and pack needle bearings with
Shell Alvania #2 or equivalent bearing lubricant.
d. Starting motor must be operated a few seconds with ignition switch off to make sure pinion
engages properly and turns freely without binding or excessive noise. Engine must be started two or three
times to see that pinion disengages properly when engine is off.
Do not use aluminum cable to repair wiring. If there is a fault
in the aluminum cable, complete cable assembly must be
replaced with copper wire and suitable terminals. Aluminum
cable wiring was used in: battery circuit, battery to ground,
battery to master relay, master relay to starter solenoid, starter
solenoid to starter, and engine return ground wire to airframe
Refer to individual schematics and latest revision of Piper
Service Bulletin No. 836A.).
e. Check aluminum cables in battery circuit for unsatisfactory conditions such as loose or corroded
terminals.
11-74. OVERHAUL OF STARTING MOTOR
If any indication of starting motor difficulty is noted, remove motor from engine for cleaning and
repair.
11-75. REMOVAL OF STARTING MOTOR
To remove starting motor:
a. Disconnect ground cable from battery post to prevent a short circuit.
b. Disconnect lead from starting motor terminal.
c. Remove mounting bolts.
d. Remove motor.
11-76. DISASSEMBLY OF STARTING MOTOR
a. Remove frame screws from commutator end head and pull end head and armature from frame.
Lift brushes and lock in elevated position with brush springs. Use a puller to remove end head from armature.
Use a special bearing puller to remove sealed ball bearing from armature shaft.
b. Remove frame screws holding gear housing to frame. Remove bolts and nuts holding gear hous-
ing to pinion housing and separate two units. Pull Bendix shaft from pinion housing. Do not use steel spacer
on pinion end of shaft. Remove reduction gear, woodruff key and steel spacer from shaft.
c. Turn Bendix pinion until it locks in extended position. Locate spiral pin and use a punch to
remove. Slide drive assembly off shaft. Do not disassemble drive and do not dip it in cleaning solvent.
d. Remove roller bearings from gear housing, with arbor press and correct bearing arbor. Do not
hammer out. Parts must be cleaned and inspected for excessive wear or damage. Bearings must be checked
for proper clearance, evidence of roughness, or galling. Oil and dirt must be removed from insulation.
e. Check insulation condition.
Revised: February 28, 1995
CAUTION
2F24
Island Enterprises
ELECTRICAL SYSTEM